Komatsu WB93S-5E0 Backhoe-Loader Shop Manual WEBM008302 – PDF DOWNLOAD

Description

Komatsu WB93S-5E0 Backhoe-Loader Shop Manual WEBM008302 – PDF DOWNLOAD

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DESCRIPTION:

Komatsu WB93S-5E0 Backhoe-Loader Shop Manual WEBM008302 – PDF DOWNLOAD

SERIAL NUMBER
WB93S-5EO F20466 and up

FOREWORD:

This shop manual has been prepared as an aid to improve the quality of repairs by giving the operator an accurate
understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure
you understand the contents of this manual and use it to full effect at every opportunity.
This shop manual mainly contains the necessary technical information for operations performed in a service workshop.
The manual is divided into chapters on each main group of components; these chapters are further divided into the
following sections.
STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an understanding
of the structure, but also serves as reference material for troubleshooting.
TESTING AND ADJUSTMENTS
This sections explains checks to be made before and after performing repairs, as well as adjustments to be
made at completion of the checks and repairs.
Troubleshooting charts correlating «Problems» to «Causes» are also included in this section.
REMOVAL AND INSTALLATION
This section explains the order to be followed when removing, installing, disassembling or assembling each
component, as well as precautions to be taken for these operations.
STANDARD MAINTENANCE
This section gives the judgement standards when inspecting disassembled parts.

TABLE OF CONTENTS:

Komatsu WB93S-5E0 Backhoe-Loader Shop Manual WEBM008302 – PDF DOWNLOAD

CONTENTS 3
SAFETY 5
FOREWORD 7
HOW TO READ THE SHOP MANUAL 8
HOISTING INSTRUCTIONS 9
STANDARD TIGHTENING TORQUE 10
COATING MATERIALS 12
ELECTRIC 13
WEIGHT TABLE 14
TABLE OF OIL AND COOLANT QUANTITIES 15
CONVERSION TABLE 17
POWER TRAIN 26
10 STRUCTURE AND FUNCTION 25
TRANSMISSION (4WD) 28
TRANSMISSION 30
DRIVE SHAFTS 33
CONTROL VALVE BLOCK 35
FRONT AXLE 36
REAR AXLE 39
STEERING SYSTEM (4WS) 43
HYDRAULIC PUMP 47
8-SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL) 61
10-SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL) 67
8-SPOOL CONTROL VALVE (WITH SERVOCONTROL) 76
10-SPOOL CONTROL VALVE (WITH SERVOCONTROL) 84
CLSS 93
STEERING UNIT 118
PPC VALVES 119
PPC VALVE (BACKHOE CONTROLS) 134
SOLENOID VALVE GROUP (EV1) 140
SOLENOID VALVE GROUP (EV2) 143
HAMMER AND JIG ARM SOLENOID VALVE 144
HAMMER SOLENOID VALVE 145
JIG ARM SOLENOID VALVE 146
JIG ARM AND SIDE DIGGING BOOM SOLENOID VALVE 147
JIG ARM AND 2-WAY ATTACHMENT SOLENOID VALVE 148
SIDE DIGGING BOOM SOLENOID VALVE 149
2-WAY ATTACHMENT SOLENOID VALVE 150
SAFETY VALVES 151
SHOVEL CYLINDERS 155
BACKHOE CYLINDERS 157
AIR-CONDITIONING UNIT 161
OPERATION OF THE AIR CONDITIONING UNIT 162
20 TESTING AND ADJUSTMENTS 163
NORMAL OR STANDARD TECHNICAL DATA 164
SPECIAL TOOLS 188
VALVE CLEARANCE ADJUSTING 189
ENGINE SPEED TESTS 190
TENSIONING THE AIR-CONDITIONING COMPRESSOR BELT 191
BLEEDING AIR FROM CIRCUITS – ELIMINATING RESIDUAL PRESSURE 192
ADJUSTING ACCELERATOR PEDAL TRAVEL AND ACCELERATOR LEVER 194
ADJUSTING BRAKE PEDAL SLACK/ALIGNMENT 196
BRAKING SYSTEM CHECKS 197
PARKING BRAKE ADJUSTMENT 199
CHECKING AND SETTING PRESSURE IN THE ATTACHMENTS HYDRAULIC CIRCUIT 201
CHECKING THE SETTING OF MAIN RELIEF AND SECONDARY VALVES 203
SETTING THE MAIN RELIEF VALVES AND THE REDUCING VALVES 206
CHECKING AND ADJUSTING THE LS DIFFERENTIAL PRESSURE – ADJUSTING THE LS VALVE 208
CHECKING AND ADJUSTING SERVOCONTROLS SUPPLY PRESSURE 209
ADJUSTING THE PC VALVE 210
TESTING AND SETTING STEERING CONTROL SYSTEM PRESSURE 211
CHECKING FOR LEAKS IN THE STEERING CYLINDERS 212
TESTING PRESSURES IN THE POWER TRAIN GROUP 213
TESTING THE CORRECT FUNCTIONING OF THE POWER TRAINCLUTCHES 214
ANALYSIS OF CAUSES HYDRAULIC DRIFT 215
JIG ARM CLEARANCE ADJUSTMENT 220
TESTING THE AIR-CONDITIONING UNIT 222
EMPTYING THE AIR-CONDITIONING UNIT 224
TROUBLESHOOTING 225
30 REMOVAL AND INSTALLATION 239
HOW TO READ THE MANUAL 240
PRECAUTIONS TO BE TAKEN WHILE WORKING 241
SPECIAL TOOLS 242
ENGINE HOOD 246
FRONT GUARD 247
RADIATOR GROUP – INTERCOOLER 248
INTERCOOLER 251
CONDENSER (For machines equipped with an air-conditioning unit) 253
EXHAUST PIPE 254
MUFFLER 255
AIR FILTER 256
ENGINE BELT 257
TURBOCHARGER 258
AIR-CONDITIONING UNIT COMPRESSOR 259
AIR-CONDITIONING UNIT COMPRESSOR BELT 261
FAN AND HEATING GROUP 262
BATTERY 267
FUEL TANK 268
STEERING WHEEL AND TRANSMISSION-REVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP 269
WORKING BRAKE PUMP GROUP 271
STEERING UNIT 274
CAB 276
HYDRAULIC OIL TANK 282
HYDRAULIC PUMP 287
TRANSMISSION 289
CONVERTOR 365
ENGINE 366
CONTROL VALVE (Standard version) 369
CONTROL VALVE (version with servocontrol) 372
STEERING SOLENOID VALVE GROUP 375
FRONT AXLE 376
REAR AXLE 415
SHOVEL PPC VALVE 467
SHOVEL LIFT CYLINDERS 469
SHOVEL DUMP CYLINDERS 471
SHOVEL 473
FRONT WORKING EQUIPMENT 474
BACKHOE PPC VALVES (Optional) 476
PPC VALVE SUPPORT RELEASE CABLES 478
PPC VALVE SUPPORT RETURN GAS SPRING 480
SOLENOID VALVE GROUP (servocontrol and optional attachment) 482
BACKHOE BOOM CYLINDER 483
ARM CYLINDER 485
JIG ARM CYLINDER 487
OUTRIGGER CYLINDER 488
BACKHOE SWING CYLINDERS 490
BACKHOE BUCKET CYLINDER 492
BACKHOE BOOM SAFETY CYLINDER 494
CYLINDER 495
BACKHOE WORKING EQUIPMENT 503
BACKHOE BUCKET 505
BACKHOE BOOM CYLINDER 506
ARM 507
JIG ARM 509
2nd ARM 510
2nd ARM GUIDES 511
BACKHOE SWING BRACKET 512
COMPLETE BACKHOE BACKFRAME 513
BACKFRAME LOCK PISTONS 515
40 STANDARD MAINTENANCE 517
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD 518
TRANSMISSION 520
FRONT AXLE 525
REAR AXLE 528
HYDRAULIC PUMP 532
CONTROL VALVE 534
PPC VALVES 567
SHOVEL CYLINDERS 569
BACKHOE CYLINDERS 571
FRONT WORKING EQUIPMENT 574
SWING BRACKET 576
BACKHOE WORKING EQUIPMENT 578
90 DIAGRAMS AND DRAWINGS 581
HYDRAULIC CIRCUIT DIAGRAM (MECHANICAL VERSION) – UP TO S/N F20723 583
HYDRAULIC CIRCUIT DIAGRAM (MECHANICAL VERSION) – FROM S/N F20724 TO F21521 585
HYDRAULIC CIRCUIT DIAGRAM (MECHANICAL VERSION) – FROM S/N F21522 AND UP 587
HYDRAULIC CIRCUIT DIAGRAM (MECHANICAL VERSION) – OPTIONAL 589
HYDRAULIC CIRCUIT DIAGRAM (VERSION WITH SERVOCONTROL) – UP TO S/N F20723 591
HYDRAULIC CIRCUIT DIAGRAM (VERSION WITH SERVOCONTROL) – FROM S/N F20724 TO F20920 593
HYDRAULIC CIRCUIT DIAGRAM (VERSION WITH SERVOCONTROL) – FROM S/N F20921 TO F21521 595
HYDRAULIC CIRCUIT DIAGRAM (VERSION WITH SERVOCONTROL) – FROM S/N F21522 AND UP 597
HYDRAULIC CIRCUIT DIAGRAM (VERSION WITH SERVOCONTROL) – OPTIONAL 599
HYDRAULIC CIRCUIT DIAGRAM – STEERING 601
ELECTRICAL CIRCUIT DIAGRAM (1/3) 603
ELECTRICAL CIRCUIT DIAGRAM (2/3) 605
ELECTRICAL CIRCUIT DIAGRAM (3/3) 607

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PLEASE NOTE:

• This is not a physical manual but a digital manual – meaning no physical copy will be couriered to you. The manual can be yours in the next 2 mins as once you make the payment, you will be directed to the download page IMMEDIATELY.
• This is the same manual used by the dealers inorder to diagnose your vehicle of its faults.
• Require some other service manual or have any queries: please WRITE to us at [email protected]

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